초록 ▼

A snowmobile track suspension subframe of the slide rail type carries a track drive axle at its forward end. Such axle mounts both the track drive sprockets and the driven sprocket of a track drive chain assembly so that the entire track suspension subframe assembly, including its forward drive end,

A snowmobile track suspension subframe of the slide rail type carries a track drive axle at its forward end. Such axle mounts both the track drive sprockets and the driven sprocket of a track drive chain assembly so that the entire track suspension subframe assembly, including its forward drive end, is capable of movement independently of the main frame.

대표청구항 ▼

An endless track vehicle comprising: a main frame, a subframe mounting an endless track, resilient suspension means interconnecting said main frame and said subframe, a track drive sprocket means drivingly engaging said endless track, a drive axle mounting said track drive sprocket means, said drive

An endless track vehicle comprising: a main frame, a subframe mounting an endless track, resilient suspension means interconnecting said main frame and said subframe, a track drive sprocket means drivingly engaging said endless track, a drive axle mounting said track drive sprocket means, said drive axle being mounted on said subframe, said drive sprocket means engaging said endless track at one end portion of said track and an idler wheel means engaging said track at an opposite end portion thereof, an idler axle mounting said idler wheel means, said idler axle being mounted on said subframe, and a transverse suspension shaft on said main frame extending adjacent to said subframe and longitudinally between said driven axle and said idler axle, said resilient suspension means including torsion spring means connected to one end portion to said suspension shaft and at an opposite end portion to a lower forward portion of said subframe to interconnect said main frame and said subframe, said resilient suspension means also including swing arm means connected at one end to said suspension shaft and at an opposite end to a lower portion of said subframe, said torsion spring means and said swing arm means extending diagonally in opposite directions from said suspension shaft, the connections of said torsion spring means and said swing arm means to said subframe including lost motion connection means enabling upward movement of forward and rear portions of said subframe relative to said suspension shaft, said torison spring means acting in conjunction with said suspension shaft means to urge the spring-connected portion of said subframe downwardly, said swing arm means acting in conjunction with said suspension shaft means and said torsion spring means to urge the swing arm-connected portion of said subframe downwardly relative to said main frame.